trivial: small cleanups

These are small cleanups all over the tree.

Trivial style and comment changes to
  fs/select.c, kernel/signal.c, kernel/stop_machine.c & mm/pdflush.c

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
diff --git a/kernel/signal.c b/kernel/signal.c
index cc8303c..64ad0ed 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -220,7 +220,7 @@
 	unsigned long flags;
 
 	spin_lock_irqsave(&t->sighand->siglock, flags);
-	clear_tsk_thread_flag(t,TIF_SIGPENDING);
+	clear_tsk_thread_flag(t, TIF_SIGPENDING);
 	flush_sigqueue(&t->pending);
 	flush_sigqueue(&t->signal->shared_pending);
 	spin_unlock_irqrestore(&t->sighand->siglock, flags);
@@ -424,7 +424,7 @@
 	}
 	if (signr &&
 	     ((info->si_code & __SI_MASK) == __SI_TIMER) &&
-	     info->si_sys_private){
+	     info->si_sys_private) {
 		/*
 		 * Release the siglock to ensure proper locking order
 		 * of timer locks outside of siglocks.  Note, we leave